GENERAL DESCRIPTION
   The XR19L220 (L220) is a highly integrated device that combines a full-featured single channel Universal Asynchronous Receiver and Transmitter (UART) and an RS-232 transceiver. The L220 is designed to operate with a single 3.3V or 5V power supply. The L220 is fully compliant with EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply. The device operates at 250 Kbps data rate with worst case 3K ohms load. Both RS-232 driver outputs and receiver inputs can operate in harsh electrical environments of +/-15V without damage and can survive multiple +/-15kV ESD on the RS-232 lines, while maintaining RS-232 output levels.

FEATURES
● Meets true EIA/TIA-232-F Standards from +3.0V to +5.5V
   operation
● Up to 250 Kbps data transmission rate
● 45us sleep mode exit (charge pump to full power)
● ESD protection for RS-232 I/O pins at
   ■ +/-15kV - Human Body Model
   ■ +/-15kV - IEC 1000-4-2, Air-Gap Discharge
   ■ +/- 8kV - IEC 1000-4-2, Contact Discharge
● Software compatible with industry standard 16550 UART
● Intel/Motorola bus select
● Complete modem interface
● Sleep and Power-save modes to conserve battery power
● Wake-up interrupt upon exiting low power modes

APPLICATIONS
● Battery-Powered Equipment
● Handheld and Mobile Devices
● Handheld Terminals
● Industrial Peripheral Interfaces
● Point-of-Sale (POS) Systems